The following volumes are available for general research. Subscribers to the ResearchOnLine Digital Library may access any of these volumes at no charge.

U.S. Government
The Official Records of the American Civil War

Abbot, Henry L
Siege artillery in the campaigns against Richmond, with notes on the 15-inch gun, including an algebraic analysis of the trajectory of a shot in its ricochets upon smooth water.
183 pgs.

Abbott, John Stevens Cabot, 1805-77
The history of the Civil War in America...the various naval & military engagements v1

Abbott, John Stevens Cabot, 1805-77
The history of the Civil War in America...the various naval & military engagements v2

Adams, Charles Francis, 1835-1915
Before & after the Treaty of Washington: the American Civil War & the war in the Transvaal: address, NY Hist.